1. A pharmaceutical composition for the treatment and / or prevention of a cancer, comprising an antibody or fragment thereof as an active ingredient which has immunological reactivity with an incomplete polypeptide of CAPRIN-1, CAPRIN-1 that is represented by any of the sequences numbered even numbers among sequences SEQ ID NO: 2-30, and wherein the polypeptide comprises an amino acid partial sequence shown in SEQ ID NO: 37 or an amino acid sequence having 80% or higher identity n The sequence of the amino acid sequence of SEQ ID NO: 37.2. A pharmaceutical composition according to claim 1, wherein the cancer is breast cancer, brain tumor, leukemia, lymphoma, lung cancer, mastocytoma, renal cancer, cervical cancer, bladder cancer, esophageal cancer, gastric cancer or colorectal cancer .3. A pharmaceutical composition according to claim 1, wherein the antibody is a monoclonal antibody or polyclonal antitelom.4. A pharmaceutical composition according to any of claims, wherein the antibody is a human antibody, humanized antibody, chimeric antibody, single chain antibody or bispecific antitelo.5. An antibody having an immunological reactivity with a polypeptide which comprises the amino acid sequence shown in SEQ ID NO: 37 or an amino acid sequence having 80% or higher sequence identity with the amino acid sequence of SEQ ID NO: 37.6. The antibody of claim 5, which has a cytotoxic activity against cancer cells expressing the protein CAPR1. Фармацевтическая композиция для лечения и/или профилактики рака, содержащая антитело или его фрагмент в качестве активного ингредиента, который обладает иммунологической реактивностью по отношению к неполному полипептиду CAPRIN-1, при этом CAPRIN-1 представлен любой из последовательностей, пронумерованных четными числами среди последовательностей SEQ ID NO: 2-30, и при этом неполный полипептид содержит аминокислотную последовательность, представленную в SEQ ID NO: 37, или аминокислотную последовательность, имеющую 80% или более высоку
